精英家教网 > 初中英语 > 题目详情

-Doctor,________ should I take this medicine?

-Twice a day.

[  ]

A.

what time

B.

how much

C.

how soon

D.

how often

答案:D
解析:

  what time意为“什么时间”;how often表示“多久一次”,指动作的频率;how soon表示“还要多久才……”,一般用于将来时,回答用“in…”; how much表示“多少”,后面接不可数名词。而答语Twice a day.表示频率,故选D。


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